INTRODUCTION. 16 



to 1853, investigators* in this locality, as recorded in Mr. 

 Byerley's Fauna, \ had discovered in all about 270 species 

 of Marine Invertebrata. Since that date there has been no 

 general work on the subject. The Liverpool Marine Biology 

 Committee have to place on record altogether 913 species, I 

 of which at least 235 had not been found before in the 

 locality. Sixteen of these species have not been previously 

 discovered in British seas, and at least seven species and 

 three varieties are new to science. 



University College, Liverpool, 

 January, 1886. 



* For full details in regard to the work of previous observers, see Mr. 

 Higgins' Report, p. 16. 



j- Appendix to vol. viii of Proc. Lit. and Phil. Soc. of Liverpool, 1855. 



J Including previous records. The district investigated by the L. M. B. G. 

 is of somewhat wider extent than that treated of by Mr. Byerley. 



